Valve-grinding machine



C. DIEHL. vALvE GRINDING MACHINE.

APPLICATION FILED OCT. 28, I92I I 1,429,494, PatentedSept. 19,1922.

C. DIEHL.

'VALVE GRINDING MACHINE.

APPLICATION FILED ocnzs, I92I.

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(jwuwntoz @l lC. DIEHI..

vALvE GmNmNG MACHINE'. l APPLICATION FILED OCT-28,1921. I 1,429,494, PatentedSept. 19, 1922,

3 SHEETS-SHEET 3.

` Grinding Machine, ofy

Patented Sept. 19, 1922.

inl Je CHARLES nnriii, or PERU, INDIANA.

, vALvE-Gnnvnrns Meer-Irun. f ff application med october as, 1921. serial no. 511,2`1e. i

'mu'ltaneously y The primary object of the invention is to provide means for rotating the valves with.

respect to their cages in'which the valves are supported, ythe 'weight of the respective valve vcages being sufficient to cause the valve cages to rotate with' their valves when the valves inov'e in one direction, but cause the valve cages to ymove with respect to the valve'members, when the valve membersjare moved in a reverse direction.

Another object of the invention is to provide means for centering the valve with respect to its cage and seat, to insure a true grinding of the valve.

Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the coin bination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood thatchanges in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a side elevational view of a machine constructed in accordance with the present invention.

Figure 2 is a plan view of the same.

Figure 8 is a sectional view .taken on line 3 8 of Figure 1.

Figure 4 is an enlarged detail view disclosing the connection between an operating rod and valve stem.

Figure 5 is a sectional view taken on line 5 5 of Figure 4. I

Figure 6 is a sectional view taken on line 6 6 of Figure 5. y

Referring to the drawings in detail, the reference character 5 designates the base of the machine, to which is secured the frame indicated generally by the reference charac- `ter 6, and which embodies the sect-ions 7 and 8 respectively.

ASuppi'irts 9 extend upwardly from thel base fasclearly shown by 'Figure'l of the draw,-`

ings, each l"support being provided with 'a'lv vertically disposed bore designed to accom-v` modatea centering pin indicated atlO, suitable means such as the set screw 1 1' being positions ofadjustment'. A transversely eX-v tending pin 12 forms a part `of each centering pin `10., and by means 'of which'the 'cenprovided'to secure the centering pin in. its y tering pins maybe moved .vertically within Q the bores of the supports..

` Bearing members 13 are formed kon the upper portion of the frame, and these bearing members support the operating v'rods 14,v

which have" heads 15 formed at the lower`- ends" thereof, which heads form the uppery sections' of the universal jointemployed` in vconnecting the operating rods and the valve stems carrying the valves under operi ation.

with the rack bar 17, which moves along the upper edge of the frame, as clearly shown by Figure 1 of the drawings. This rack bar Pinions 16 are carried at the *supper ends of the operating rods 14 and are inA mesh is formed with spaced ears 18 extending up- 3 link 19 iseccentrically.connected to the pulley 20, whereupon movement of the pulley 2O causes the rack bar 17 to reciprocate, to the end that the operating rods 14 are oscillated. l f t y As shown, each of the heads 15 is provided witha transversely extending opening,

ioo

and an opening 27 extending through thev lower portion thereof, the opening 27 being designed to accommodate the uppery eXtrem# ity of the valve stem, indicated at 28, which valve stem has connection with a block 29 supported within the transversely extending opening of the head. The block 29 is formed with a central opening, anda set screw 30 operating through the'block to grip the valve stein and secure the same within the block.

construction, the valve stem will automatie Thus it will be seen that due to this i cally center itself with respect to the operating rod associated therewith to properly grind the valve formed at the opposed end of the stem.

In the useof the device, the valves and their cages, the latter being indicated at 31, are positioned in the machine in a manner as illustrated by Figure 3 of the drawings, the valve heads being positioned on the cen tering pins 10. It Jfollows that as the machine is operated, the valves are oscillated, carrying the valve cages, the weights of the cagesbeing suiiicient to cause the cages to move with the valves.

When the valves reverse movement, during the oscillation thereof, it is obvious that the cages will slide over the valves to grind the contacting surfaces.

Having thus described the invention, what is claimedas new is':.-

l. A valve grinding machine including a base, a frame supported by the base, operating rods extending through the trame and carrying pinions on the upper ends thereof, a reciprocable rack bar movable along the upper surface of the frame and contacting with'the pinions to move the operating rods, supports mounted on the base, a centering pin mounted in each support, means for connecting a valve to the respective operating rods, said-valve adapted to engage the eentering pin associated therewith, and means forreciprocating the rack bar.

2L A valve grinding machine including a base, a frame supported by the base, centering pins adjustable on the base, operating rods carried by the frame, said operating rods adapted to cooperate with the centering pins for supporting valve members and their cages and means for oscillating the operating rods to cause the valve cages to move with respect to their valves.

3. A valve grinding machine including a base, a frame supported above-thebase, op-v erating rods supported by the frame, uni versal joints at the lower ends of the oper ating rods, said universall joints providing means to connect valves thereto, centering pins carried by the base and contacting with p 

